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Subject[RFC PATCH v2 00/17] Core scheduling v2
Date
Second iteration of the core-scheduling feature.

This version fixes apparent bugs and performance issues in v1. This
doesn't fully address the issue of core sharing between processes
with different tags. Core sharing still happens 1% to 5% of the time
based on the nature of workload and timing of the runnable processes.

Changes in v2
-------------
- rebased on mainline commit: 6d906f99817951e2257d577656899da02bb33105
- Fixes for couple of NULL pointer dereference crashes
- Subhra Mazumdar
- Tim Chen
- Improves priority comparison logic for process in different cpus
- Peter Zijlstra
- Aaron Lu
- Fixes a hard lockup in rq locking
- Vineeth Pillai
- Julien Desfossez
- Fixes a performance issue seen on IO heavy workloads
- Vineeth Pillai
- Julien Desfossez
- Fix for 32bit build
- Aubrey Li

Issues
------
- Processes with different tags can still share the core
- A crash when disabling cpus with core-scheduling on
- https://paste.debian.net/plainh/fa6bcfa8

---

Peter Zijlstra (16):
stop_machine: Fix stop_cpus_in_progress ordering
sched: Fix kerneldoc comment for ia64_set_curr_task
sched: Wrap rq::lock access
sched/{rt,deadline}: Fix set_next_task vs pick_next_task
sched: Add task_struct pointer to sched_class::set_curr_task
sched/fair: Export newidle_balance()
sched: Allow put_prev_task() to drop rq->lock
sched: Rework pick_next_task() slow-path
sched: Introduce sched_class::pick_task()
sched: Core-wide rq->lock
sched: Basic tracking of matching tasks
sched: A quick and dirty cgroup tagging interface
sched: Add core wide task selection and scheduling.
sched/fair: Add a few assertions
sched: Trivial forced-newidle balancer
sched: Debug bits...

Vineeth Remanan Pillai (1):
sched: Wake up sibling if it has something to run

include/linux/sched.h | 9 +-
kernel/Kconfig.preempt | 7 +-
kernel/sched/core.c | 800 +++++++++++++++++++++++++++++++++++++--
kernel/sched/cpuacct.c | 12 +-
kernel/sched/deadline.c | 99 +++--
kernel/sched/debug.c | 4 +-
kernel/sched/fair.c | 137 +++++--
kernel/sched/idle.c | 42 +-
kernel/sched/pelt.h | 2 +-
kernel/sched/rt.c | 96 +++--
kernel/sched/sched.h | 185 ++++++---
kernel/sched/stop_task.c | 35 +-
kernel/sched/topology.c | 4 +-
kernel/stop_machine.c | 2 +
14 files changed, 1145 insertions(+), 289 deletions(-)

--
2.17.1

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